What Is My Browser: Free Browser Detector

If you keep asking yourself what is my browser, this free tool answers in one page load. It shows your browser name, version, operating system, device type and rendering engine, plus your screen size, language and the exact user agent string you can copy. No sign-in is needed.

What Details Identify Your Web Browser?

A web browser is identified by a handful of facts: its name, its version number, the engine that draws pages, and the system it runs on. Together they describe the software that requests and displays every site you visit.

Your browser announces most of these facts in a line of text called the user agent string. A typical entry names the operating system, the engine and the browser build, such as Chrome 120 on Windows 10. Websites read that line to decide which layout, scripts or downloads to send you.

The tool also reports details that are not in the user agent. These include request headers such as language and encoding, feature support such as WebGL and cookies, and display measurements such as viewport size and pixel ratio. If you only need the raw string, the dedicated user agent checker focuses on that.

How to Use the What Is My Browser Tool

You do not type anything into this tool. It reads the connection between your device and this page, so the results describe the exact browser you are using right now.

1. Open the page in the browser you want to check. Results appear automatically.
2. Read the summary at the top: browser name, version, platform and device.
3. Scroll to Browser Details for the rendering engine and device type, then to HTTP Headers for language, encoding, Do Not Track and connection.
4. Check Browser Capabilities to see whether JavaScript, Cookies, LocalStorage, WebGL, WebRTC and Touch show Yes or No.
5. Open Screen & Display to see screen resolution, viewport size, color depth, pixel ratio and timezone.
6. Press the Copy button under the user agent section to copy the full string. The button briefly changes to Copied!

To test another browser or device, open this same page there. To see how the viewport changes, resize the window and reload the page.

Worked Example: Reading a Real Result

Say you open the page on a Windows laptop and see the values below. Each line tells you something you can act on.

• Browser and version: Chrome 120. Chrome releases a new major version roughly every four weeks, so a number far below the current release means you are overdue for an update.
• Platform and device: Windows, Desktop.
• Rendering engine: Blink, which is the engine used by Chrome and other Chromium-based browsers.
• Screen resolution: 1920 x 1080. Viewport size: 1536 x 730.
• Pixel ratio: 1.25x, common when Windows display scaling is set to 125%.

The viewport is smaller than the screen because toolbars, tabs, scroll bars and window borders take space. If a designer asks how big your browser is, the viewport is the number to send, not the screen resolution. Paste the user agent string into the bug report as well, and the developer can reproduce your exact setup.

How Do You Read and Act on the Results?

Each section answers a different question, and each has a clear next step if something looks wrong. The table below summarizes the most useful checks.

Browser name, version and engine

The name and version tell you whether a site's support list includes you. The engine matters when a page looks different across browsers: Blink powers Chrome-family browsers, Gecko powers Firefox, and WebKit powers Safari. Browsers that share an engine usually render pages the same way.

Device type and platform

Device type shows Desktop, Mobile or Tablet based on what your browser reports. The platform shows the operating system, such as Windows, Android, Linux or Chrome OS. A mismatch is not a bug, because some browsers can request the desktop version of a site on purpose.

HTTP headers

Language shows your top preferred language, such as en-US. Encoding lists the compression methods your browser accepts. Do Not Track reads Enabled only when your browser sends the signal, and Not Set otherwise. Many sites ignore that signal, so treat it as a preference, not protection.

Capabilities

A No beside Cookies or LocalStorage often explains why a site will not keep you logged in or save settings. A No beside WebGL usually means hardware acceleration is off or the graphics driver is blocked. Touch shows Yes on phones, tablets and many touchscreen laptops.

Screen and display

Pixel ratio of 2x or 3x means a high-density display, where one CSS pixel uses several physical pixels. Color depth is commonly 24-bit. Timezone helps you confirm that your device clock matches your location when a site shows wrong dates.

What Is My Browser on iPhone, iPad or Android?

Open this page in the browser app you want to identify, and the results describe that specific app. On an iPhone, Safari, Chrome and Firefox are separate apps, so each one gives its own name and version.

iPads have one quirk. By default, Safari on an iPad asks sites for the desktop version, so the user agent can look like a Mac and the device type may show Desktop, even though Touch shows Yes. That is normal behavior, not an error.

On Android phones, you will normally see Android as the platform and Mobile as the device type. Samsung phones may show Samsung Internet if that is the app you opened.

Who Needs to Check Their Browser?

Anyone who has been asked for browser details by a support team, a developer or a website form will find this useful. The most common situations are listed here.

• Reporting a bug: copy the user agent, viewport size and pixel ratio into the ticket.
• Web developers and QA testers: confirm which browser and engine a test device is really running before logging results.
• SEO and content teams: check how a page renders at your actual viewport size before sending screenshots.
• Everyday users: find out whether the browser is outdated, or why a site says it is unsupported.
• Privacy-minded users: see exactly what every site you visit can read without asking you.

If you are also troubleshooting connection or hosting problems, the tools in the Network and IP tools collection cover the other side, such as DNS records and domain to IP conversion.

Best Practices and Troubleshooting Tips

A few habits make browser checks more reliable and save time when you contact support.

How do you update your browser?

Open the browser menu and look for an About page. In Chrome, go to Help and then About Google Chrome. In Firefox, go to Help and then About Firefox. The browser checks for updates and prompts you to restart. Run this tool again afterward to confirm the new version number.

How do you clear your browser cache?

Clearing the cache is done in the browser's privacy settings, not by this tool. In Chrome and Edge on Windows, press Ctrl+Shift+Delete, choose cached images and files, and confirm. Clear cookies only if you are willing to sign in to sites again.

Common mistakes

• Checking the wrong browser: your default browser may differ from the one you use for work. Open the page in each one.
• Quoting screen size as browser size: send the viewport size when someone asks how big your browser is.
• Testing with extensions on: ad blockers and privacy extensions can change capability results. Try a private window to compare.
• Reading the result after resizing: display values are captured when the page loads, so reload after changing window size or zoom.

Limitations to Keep in Mind

This tool reports what your browser says about itself, and browsers do not always say everything. Some privacy-focused browsers shorten or standardize their user agent, and some browsers imitate others for compatibility. If a name looks surprising, compare it with the full user agent string and the rendering engine.

The tool describes your browser. It does not clear data, change settings or test your internet speed. The same information that helps websites tailor content can also be used for fingerprinting, which is why it is worth knowing what your browser reveals.

Run the tool on this page now to see your browser name, version, device and screen details, then copy the user agent if you need to share it with a developer or support team.